9907428 has 24 divisors (see below), whose sum is σ = 23173920. Its totient is φ = 3294400.

The previous prime is 9907423. The next prime is 9907433. The reversal of 9907428 is 8247099.

9907428 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9907423) and next prime (9907433).

It is not an unprimeable number, because it can be changed into a prime (9907423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6103 + ... + 7553.

It is an arithmetic number, because the mean of its divisors is an integer number (965580).

Almost surely, 2^9907428 is an apocalyptic number.

It is an amenable number.

9907428 is an abundant number, since it is smaller than the sum of its proper divisors (13266492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9907428 is a wasteful number, since it uses less digits than its factorization.

9907428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027 (or 2025 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 9907428 is about 3147.6067098670. The cubic root of 9907428 is about 214.7766058949.

The spelling of 9907428 in words is "nine million, nine hundred seven thousand, four hundred twenty-eight".